Block-signal system.



H. H. SIMS, J. M. HATCH & J. M. 'TURRENTINE.

BLOCK SIGNAL SYSTEM.

APPLICATION TILED MAR-16,1909.

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BLOCK SIGNAL SYSTEM. APPLICATION FILED MAR. 16, 1909.

Patented Sept. 28, 1909.

Z SHEETS-SHEET 2.

Witnmoeo insiirnn s rar'rns Parana i HERBERT H. SIMS, JAMES M. HATCH, Abl'D JAMES M. TURBENTINE, 0E? NORTH CAROLINA, ASSIGNORS OF ONE FIFTH T0 ALBERT L. COX

AND CF22? 'IO WILLIAM H. PAGE, OF RALEIGH, NORTH CAROLINA.

' BLGCK-SIGNAL SYSTEM.

To all "whom it may concern:

Be it known that we, llninnurr ll. SIMS, James M. Haven, and James M. TUnnnN- 'llNl'), citizens of the United States, residing at Raleigh, in the county of Wake and State of North Carolina, iave invented new and useful improvements in Block-Signal Systems, of which the following is a specification.

This'invention relates to'block signal systems, the object of the invention being to provide a simple, reliable and effective signaling system which by the exercise of ordi nary care and diligence will enable head-on and rear-end collisions to be prevented, the mechanism hereinafter described insuring the delivery of the sound of the Whistle of a locomotive engine to the keeper of one of the stations or block houses, each block in the system being provided at its opposite ends or terminals with, such stations or block houses.

'With the above general object in View, the nature of which will more the description proceeds, the invention con sists in the novel construction, combination and arrangement of parts as herein fully described, illustrated and claimed.

In the accompanying drawings :Figure l is a side elevation partly in section, illus trating the block signaling system of this invention. Fig. 2 is an enlarged diagraminatic view of tee system.

Referring to the drawings. l and 2 designate stations at the opposite ends of a block defined by the poles 3 and 4, which are arranged partly adjacent to the stations, the latter beingshown in the form of block houses in each of which is arranged a pair of telephonic receivers, the station 1 being provided with receivers 5 and 6 and the station 2 being shown as provided with re-v ceivers 7 and 8.

At a suitable elevation on the pole 3 there is arranged a telephonic transmitter 9 while on the pole t at the opposite end of the block is arranged another transmitter 10, the transmitters 9 and 10 being connected by the necessary wiringindicated at 11, and the transmitter 9 being connected to the receiver 6 by wires 12 while the transmitter 10 is connected to the receiver 7 by wires 13. The receiver 5 is connected by Wires 14 to another transmitter 15 on a pole 16 forming Specification of Letters Patent.

Application filed March 16, 1909. Serial No.

fully appear as- Patonte 5:

to n ranged at a suitable elevation over .no t and above the top of a moving train the engineer may blow the whistle just locomotive is passing under the tunnel branch tube 25 leads from the tube tween the transmitter and the sound 1 ing funnel leads downward into the l block house as clearly shown in Fi to convey the sound through the the adjacent block house while th delivered to the tube 24 is trai the wires to the transmitter at end of the same plug, whence the sound n I1 downward through the tube 23 thereof into 3Q the adjacent block house.

By now referring to Fig. 1, it will be understood that when the whistle of the locomotive is sounded under the funnel :22 the sound is carried through the tube and branch tube 25 into the block thesame time the transmitter 9 convey the sound along the wires 11 and in to the receiver 7 in the block house that the occupants of both of said bloc l" opposite ends of the same bloc-l: as to the position of the train and vised of the fact that the train eccunies t block between said stations. "i lhe reaches the next station, sounded'into the funnel 21 52.15? passes through the tubes 2% and adjacent block house s transmitted through the Wires the receiver 6 in the block llOl posite end of the block, thereiy both of the station keepers has passed out of the block. in collisions may be practically avoided dinary care and diligence. case or age of any of the wires betwi, i mitters 9 and 10, the erdinar' telephone connections may i train,

the required repairs have been made in the system herein-above described.

" We c1eim:-

1. in a block signal system, stations at 0 130; e ends of each block, a teiepho iic trans lnitter and receiver at each station, Wires eomzecting the same, and sound-receiving funnels connected with each i'rm'ismitter and arranged ever the track at an elevation above the moving ti-sin. 2. In block signal system stations and pees at opposite ends of each hieclg a telephone transmittersupported at an elevation on each 010 tubes leading i lownwardfrom said transmitters, funnels attached to the lower ends of such tubes, zmd'arranged over the track at an elevation above a meving Wires connecting the transmitters at opposite ends 01 the block, and receivers at each station included in said wiring.

In a block signal system, stations and poles semis at opposite ends of each block, a telephone transmitter supported at an elevation on each pole, a tube extending from each transmitter downward, e sound-gathering funnel connected to the iewer end or each tube and arranged over the track" at an eie-;

vetion shove the moving train, branch tubes leading from the aforesaid tubes downward to the bloat: hous cof the adjacent station, a receiver at each station, and an electric circuit inehiding said transmitters and receivers,-substantially as described.

In testimony whereof We afiix our signetures in presenceoi": two witnesses.

HERBERT H. SIMS. JAMES M. HATCP. JAMES M. TURRENTINE.

Witnesses:

BESSIE G U'rmns, ELIZABETH E. OLDHAM. 

